Spring shackle bearing



July 7, 1931. J H OLCOTT 1,813,708

SPRING SHAGKLE BEARING Filed Marh 12, 195o 2 sheets-sheet 1 July 7,1931. l J. H. oLcoTT 1,813,708

SPRING SHACKLE BEARING Filed March l2, 1930l 2 Sheets-Sheet 2 INVENTORJames H.|]lcn.

BY HIS ATTORNEY cal bearing 'sections-16.

Patented July 7, 1931 PATENT OFFICE e JAMES E. OLCOTT, OF WATERBURY,CONNECTICUT SPRING SHACKLE BEARING Application led March 12, 1930.Serial No. 435,130.

rlhis invention relates to anti-friction bearings for vehicle springs,and more particularly to an improved shackle connection between thespring and frame of ra motor One .object of this invention is to providean anti-friction Vspring' shackle bearing of the above nature which willbe simple in construction, inexpensive to manufacture,

flexible, easy riding, noiseless, easy to install and manipulate,compact, ornamental in appearance, and very eiicient and durable in use.

' With these and other `objects in view there have been illustrated onthe accompanying drawings three forms in which the invention may beconveniently embodied in practice.

In the drawings: y

"Fig 1 represents a fragmentary View, partly in section, of the improvedspring shackle bearing and portionsot1 the vehicle frame and spring towhich itfis attached.

v Fig. 2 is a fragmentary side sectional view of the same, taken alongthe line 2-2 of Fig. 1, looking in thedirection of the arrows.

, Fig. 3 is a fragmentary end view, partially in section, of a modifiedform of the invention. f Fig. 4 is a-view similarto'Fig. 1 of anothermodified form of the invention.

AReferring now to the drawings in which like reference numeralsdenotecorresponding parts throughout the severalviews,the numeral 10lindicates the frame of a motor vehicle' upon which the presentinvention .is installed. i 'Iheframey 10 is adaptedY to -be vconnectedto .a leaf spring 11 of any standard type by means of 'a' shacklebearing, unit generally indicated by the numeral 12.- The shacklebearing unit 12 is adapted Vto be connected to the enlarged aperturedend 13 of the frame 10 bymeans of a solid upper bearing pin 14 havingaserrated central section 15v for rictional non-rotative engagement withthe inner surface of the end 13 of the frame 10,;the extremities of saidbearing pin 14 extending outwardly beyond said,l frame l() to provide fpair of cylindri- CII The spring 11 has an extremity 17 bent around asolid lower bearing pin 18 similar to the pin 14 already mentioned, saidpin 18 also having a central serrated section 19 for frictionalnon-rotative engagement with the bent-over extremity of the spring'lland being provided with outwardly vextending lateral bearing sections20. v

In order to provide a flexible rocking connection between the bearingpins'14 and 18, provision is made of a pair of hollow roller bearings21, one located at each side of the shackle unit, Said roller bearings21 being positioned between and in engagement. with the bearing sections16 and 20 of said C5 vbearing pins 14 and 18.

The shackle bearing pins 14 and 18 of the shackle bearing unit arejoined together and adapted to be protected from dust, moisture, etc.,bymeans of a pair of subl@ stantially oval-shapedshell members 22 forfitting about the bearing surfaces 16 and 20 of the bearing r pins andembracing the roller bearings 21. The inner edges of the shell members22 are adapted to be closed 75 by oval-shaped inner cover plates 23having outwardly directed flanges 24 fitting over the inner edges ofsaid shells 22.

For the purpose of holding the shell members 22 and the cover plates 23in the assembled operating position shown in Fig. 1, provision is `madeof a central bolt 25 located between the vehicle frame 10 and the spring11 and passing through the hol low roller bearings 21. The bolt 25 hasa` head 26 atrone end for engaging the outside surface of one of theshackle shells 22, and the other end 26a of the bolt` 25 is threadedJfor receiving a nut 27 for engaging a washer 28, which in turn tightlyengages against kthe outer surface of the other shackle shell 22. Thecentralportion or' the 'nut-engaging shell 22 is provided with anaperture fitting snugly about the bolt 25.

In order to form tight joints .-at the in* side of the coversections23,y provision is made of two pairs of ring askets 30 and 30a, two ofwhich surroun s each of the bearing 'pins ae-the junetiens between die,`serrated and .annota seetens thereof, said" gaskets being preferablytriangular in cross-section, as shown in Fig. l, and fitted snuglyWithin similar shaped annular re- Cesses in the inner cover plates 23.

Operation ngperggn, when the .vehicle .rocks up and down due.v to-liri'eguiarities in the road Way, the bearing pins '145 and 18 Willrotate slightly With respect to the tWo hollow roller bearings 2ltherein etnie-6.11,taking...up:thei` relative endwise motion between theframe 10 and spring,` 1l. In the forni of the in qention vshownin Fig.3, the shackle bearing unit isidentical with that. shown .inf F l xand2, with` fthe `excl, tion oigthe shapejof the extremities of .tl eringpinsthe shells, andthe hollow V.roller leanings. Asj s'hojx'viji inFigj; the ',balg Aand 21S-@ Dr-Cldvlwvith ,tap'er'e'djeggtrmitcs3 1d'3,4! which @denied to bear 4Q11 OPEQSG. .sides of; a 'revers'eiyltapered hollow l,roller bearing- Moreyer, with.this'J niodiiedorin ,ofthe ,iivgniql glllneiigrgl Srlieg isf used l lie np lToosenes/su and.Wear'lbetwee the v`S glgrem disclosed .in vFigs- @lie l,fehlesheilsitars conneetedf b yya boit passing through` the ,interior oiftlaey roller siredv the* tsh llsinayQbenponnected boltspasslngqthrough l'omngitudinal,A holesl lthe ferent-@1210i vt ieloeralrino pins'. i 'This iconstruc- 'nitliis'@meenamtimmermation.

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disclosures but may be modified and embodied in various other formsWithout departing from its spirit. In short, the invention includes allthe niodilications and embodiments coming Within the scope of 70 thefollowing claims.

Haring thus fully described .the .inven- Jtionwhat .is .claimedas new,andgfory Which it is desired to secure Letters Patent, is:

l. In a shackle, a pair of o'ppositely dis- 75 posedicupe-,shapedfovallgshelis, a connecting bolt passing through thecenters of said s-h'ellsgallsir of roller bearings surrounding `theendsmof said bolt and located VWithin said'shells'', and'afpair ofbearing pins en- S0 ear-1 gslocatedibsirn-g Y e@ fev :heldiilgseid-.pins

s. Lin assembled relation.

of a Vehicle frame and sigle spgiggfbgarfx1- i D Gli ing membersextending laterally from the sides of said ends, a pair of rollerbearings located between said bearing members, shell members to holdsaid bearing members and roller bearings in assembled position, a boltlocated between said ends for connecting said shell members, and a pairof cover 'plates for closing the inner sides of said shell members toexclude dust and retain lubricant therein.

8. In a shackle for connecting the ends oit' a vehicle frame and avehicle spring, bearing members extending laterally from the sides ofsaid ends, a pair of roller bearings located between said bearingmembers, shell members to hold said bearing members and roller bearingsin assembled position, a bolt located between said ends for connectingsaid shell members, and a pair of cover plates for closing the innersides of said shell members to exclude dust and retain lubricanttherein, said cover plates having outwardly extending llanges for httingover the inner edges of said shell members.

9. In a shackle for connecting the Vends of a vehicle frame and avehicle spring, tapered bearing members extending laterally from thesides of said ends, a pair of reversely tapered roller bearings locatedbetween said bearing members, shell members to hold said bearing membersand roller bearings in assembled position, and a bolt located betweensaid ends for connecting said shell members.

10. In a shackle for connecting the ends of a vehicle frame and avehicle spring, tapered bearing members extending laterally from thesides of said ends, a pair of reversely tapered roller bearings locatedbetween said bearing members, oval-shaped tapered shell members to holdsaid bearing members and roller bearings in assembled position, and abolt located between said ends for connecting said shell members.

11. In a shackle for connecting the ends of a vehicle frame and avehicle spring, bearing members extending laterally from the sides ofsaid ends, a pair of roller bearings located between said bearingmembers, shell members to hold said bearing members and roller bearingsin assembled position, a bolt located between said ends for connectingsaid shell members, and spring means surrounding said bolt and locatedwithin said roller bearing for taking up looseness between said shellsand said vehicle frame and spring.

12. Ina shackle for connecting the ends of a vehicle frame and a vehiclespring, bearing members extending laterally from the sides of said ends,a pair of roller bearings located between said bearing members, shellmembers to hold said bearing members and roller bearings in assembledposition, a bolt located between said ends for connecting said shellmembers, and means on theV exterior of said shells for permitting theintroduction of lubricant therein.

13. In a shackle for connecting the ends of a vehicle frame and avehicle spring, a pair of bearing pins extending through said ends andrigidly connected thereto, a pair of roller bearings located betweensaid bearing pins, and means extending through said roller bearings forholding said pins and bearings in assembled relation.

14:. In a shackle for connecting the ends of a vehicle frame and avehicle spring, bearing members extending laterally from the sides ofsaid ends, a pair of roller bearings located between said bearingmembers, shell members to hold said bearing members and roller bearingsin assembled position, a bolt located between said ends and passingthrough said roller bearings for connecting said shellv members, andspring means surrounding said bolt for taking up looseness between saidshells and said vehicle frame and spring.

15. In a shackle 4for connecting the ends of a vehicle frame and aVehicle spring, bearing members extending laterally from the sides ofsaid ends, a pair of roller bearings located between said bearingmembers, shell members to hold said bearing members and roller bearingsin assembled position, a bolt located between said ends for connectingsaid shell members, and a coiled spring surroundinor said bolt fortaking up looseness between said shells and said vehicle frame andspring.

16. In a shackle for connecting the ends of a vehicleframe and a vehiclespring, a pair of bearing pins extending through said ends andrigidlyconnected thereto, a roller bearing located between said bearing pins,and means for holding said pins and bearings in assembled relation.

In testimony whereof, I have affixed my signature to this specification.

JAMEs H. oLooTT.

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